Sökning: "electrostatic forces"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden electrostatic forces.

  1. 1. Development of Nickel-Titanium Shape Memory Alloys using Electron Beam Melting

    Master-uppsats, KTH/Materialvetenskap

    Författare :Georgios Manolios; [2022]
    Nyckelord :;

    Sammanfattning : In this project, the effect of electron beam melting on the behavior of NiTi shape memory alloyshas been studied, with focus on the effects of recycling powder within the process and theprocess parameters used and how “smoking” is affected. Flowability, powder characteristicsand chemical composition have been evaluated using imaging analysis techniques, Hallflowmeter measurements, FT4 powder rheometry and energy dispersive X-ray spectroscopyboth in virgin powder and in recycled powders. LÄS MER

  3. 2. Increasing the Writing Resolution for Electro-hydrodynamic 3D-Printing : by Active Steering of e-jet

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Mikrosystemteknik

    Författare :Henrik Dan Bergman; [2019]
    Nyckelord :EHD; Electro-hydrodynamic; 3D-printing; Resolution; PCL; e-jet; Additive Manufacturing;

    Sammanfattning : Additive manufacturing has grown considerably during the last couple of decades, whether it comes to the printing of metal structure or living cells. Additive manufacturing techniques relays on the successive addition of material to create the wanted structure. LÄS MER

  4. 3. Non-linear Model Predictive Control for space debris removal missions

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Alexander Korsfeldt Larsén; [2018]
    Nyckelord :;

    Sammanfattning : The rapidly increasing amounts of space debris orbiting Earth is threatening to reach a critical level, where the near-Earth environment becomes so overfilled with junk that many missions simply become unfeasible. Long-term active debris removal operations appear to be a necessity, but due to the scale of the problem this will likely be an expensive affair spanning decades or even centuries. LÄS MER

  5. 4. Electrostatic forces on a CO molecule : Simulating an AFM image

    Kandidat-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Författare :Alexandra Wadensjö; [2018]
    Nyckelord :AFM; electrostatic; electrostatic forces; CO molecule; dipole potential;

    Sammanfattning :     In atomic force microscopy (AFM), the measured force between tip and substrate is used to produce images with subatomic resolution. In this thesis, plausible electrostatic interactions between tip-substrate is studied and compared with the experimental results in the report Vibrations of a molecule in an external force field by Okabayashi et al. LÄS MER

  7. 5. Dewatering Cellulose Nanofibril Suspensions through Centrifugation

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Jennifer Astorsdotter; [2017]
    Nyckelord :Cellulose nanofibrils; Microfibrilated cellulose; Centrifugation; Dewatering; Fiber suspension; Cellulosa nanofibriller; CNF; Microfibrilerad cellulosa; MFC; Centrifugering; Avvattning; Fibersuspension.;

    Sammanfattning : Cellulose nanofibrils (CNF) is a renewable material with unique strength properties. A difficulty in CNF production is that CNF suspensions contain large amounts of water. If CNF suspension volume can be decreased by dewatering facilitated by centrifugation, then transportation costs and storage costs can be reduced. LÄS MER